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| author | Michael Niedermayer <michael@niedermayer.cc> | 2024-08-03 19:45:15 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2024-08-05 23:17:45 +0200 |
| commit | 79a1cf30d1289f90da682263ba160f6e4a5a7bf1 (patch) | |
| tree | 468d39f7801b8850d471b40d9267f074c75c8793 | |
| parent | e0f9f4d49153df3a0a43f27bb7ffa3ae3a892237 (diff) | |
| download | ffmpeg-79a1cf30d1289f90da682263ba160f6e4a5a7bf1.tar.gz | |
avformat/wavdec: Check if there are 16 bytes before testing them
Fixes: use-of-uninitialized-value
Fixes: 70839/clusterfuzz-testcase-minimized-ffmpeg_dem_W64_fuzzer-5212907590189056
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavformat/wavdec.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/libavformat/wavdec.c b/libavformat/wavdec.c index 00856a5eca..78e37b88d7 100644 --- a/libavformat/wavdec.c +++ b/libavformat/wavdec.c @@ -874,8 +874,7 @@ static int w64_read_header(AVFormatContext *s) uint8_t guid[16]; int ret; - avio_read(pb, guid, 16); - if (memcmp(guid, ff_w64_guid_riff, 16)) + if (avio_read(pb, guid, 16) != 16 || memcmp(guid, ff_w64_guid_riff, 16)) return AVERROR_INVALIDDATA; /* riff + wave + fmt + sizes */ |